package 数论;

import java.util.BitSet;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * @author aodre , QQ : 480029069
 * @date 2023/8/13 16:34
 */
public class lc50pow {

    /*
     快速幂板子题
     */


    public static void main(String[] args) {

        Map<Integer,Integer> map = new HashMap<>();
        map.put(null,10);

        map.put(10,null);
        Integer integer = map.get(null);
        System.out.println(integer);
        System.out.println(map.get(10));

        System.out.println(map.get(20));

        Map<Integer,Integer> m = new ConcurrentHashMap<>();
        m.put(11,null);

        m.put(null,11);
//        System.out.println(m.get(11));
//        System.out.println(m.get(null));

    }
}
class F{

    public void t(){
        System.out.println();

    }

}
class S extends F{
    public int a = 10;
    public void f(){

    }
}